A consumer-grade LCD monitor for precise visual stimulation

Because they were used for decades to present visual stimuli in psychophysical and psychophysiological studies, cathode ray tubes (CRTs) used to be the gold standard for stimulus presentation in vision research. Recently, as CRTs have become increasingly rare in the market, researchers have started using various types of liquid-crystal display (LCD) monitors as a replacement for CRTs. However, LCDs are typically not cost-effective when used in vision research and often cannot reach the full capacity of a high refresh rate. In this study we measured the temporal and spatial characteristics of a consumer-grade LCD, and the results suggested that a consumer-grade LCD can successfully meet all the technical demands in vision research. The tested LCD, working in a flash style like that of CRTs, demonstrated perfect consistency for initial latencies across locations, yet showed poor spatial uniformity and sluggishness in reaching the requested luminance within the first frame. After these drawbacks were addressed through software corrections, the candidate monitor showed performance comparable or superior to that of CRTs in terms of both spatial and temporal homogeneity. The proposed solution can be used as a replacement for CRTs in vision research.     

The role of vocational identity development and motivational beliefs in undergraduates’ student engagement

The present study examined the role of vocational identity processes and motivational beliefs among 216 undergraduates’ level of student engagement (affective, behavioural and cognitive). Through regression analysis, in-depth career exploration was found to be positively related to the student engagement variables, while career self-doubt emerged as a negative predictor. Identification with commitment was also found to be positively associated with students’ affective and cognitive engagement, but not behavioural engagement. Furthermore, students’ perceived value in academic activities played a critical role in mediating these relationships. Despite the significant associations, other vocational identity processes (in-breadth career exploration, commitment making and career flexibility) and motivational beliefs (competence beliefs and perceived cost) failed to act as predictors and mediators, respectively, as hypothesised. Nonetheless, the current findings demonstrate the importance of vocational identity development in undergraduate students’ learning, and suggest a need for more identity interventions or career counselling services in college and pre-university contexts.     

Predicting Chinese human resource managers' strategic competence: Roles of identity,career variety,organizational support and career adaptability

Based on career construction theory, the predictors of human resource managers' strategic competence in the Chinese context were examined. Results from a survey administered to Chinese HR managers (N = 220) showed that professional identification, career variety and organizational support for strategic human resource management positively predicted Chinese human resource managers' strategic competence. In addition, career adaptability served as a significant mediator for the above relations. The results further showed that the effect of professional identification on career adaptability was stronger among employees who perceived a higher (vs. lower) level of organizational support for strategic human resource management. The corresponding moderated mediation model was also supported such that the indirect effect of professional identification on strategic competence was stronger among employees who perceived a higher (vs. lower) level of organizational support for strategic human resource management. These findings carry implications for career construction theory and human resource managers' career development in China.     

Exploring the Assessment of and Relationship Between Elementary Students’ Scientific Creativity and Science Inquiry

The purposes of this study were to (a) develop and validate instruments to assess elementary students’ scientific creativity and science inquiry, (b) investigate the relationship between the two competencies, and (c) compare the two competencies among different grade level students. The scientific creativity test was composed of 7 open-ended items designed to assess divergent creativity and 2 open-ended items to assess convergent creativity. The science inquiry tests were composed of an open-ended inquiry (O-inquiry) test and a multiple-choice inquiry test (M-inquiry). The aforementioned instruments were verified with satisfactory validities and reliabilities in a pilot study. A total of 321 elementary students from grades 3, 4, 5 and 6 participated in the study to determine the performance differences detected by these instruments. It was found that both convergent and divergent creativity were significantly (p < .001) related with O-inquiry and M-inquiry. Analyses of variance revealed that there were significant grade-level main effects for scientific creativity and science inquiry. Post-hoc pair-wise comparisons revealed significant gaps between the 3rd graders’ performances on scientific creativity and science inquiry and the performances of 4th, 5th, and 6th graders. Implications for curricular design and science teaching are discussed.     

A study of mild cognitive impairment in veterans: role of hypertension and other confounding factors

Introduction: Hypertension has shown to be an important risk factor for the decline in cognitive function. Aim of our study is to investigate the presence of cognitive impairment of the elders with hypertension and other confounding factors.

Methods: This study was conducted on 400 veterans who were matched one-to-one with the confounding factors for assessing the presence of mild cognitive impairment using both MMSE and Montreal Cognitive Assessment (MoCA). The 13 related factors of patient data were studied.

Results: The prevalence rate of cognitive impairment was 29.25%. Age (OR 2.679, 95%CI 1.663–6.875), sleep impairment (OR 1.117, 95%CI 1.754–7.422), uncontrolled hypertension (OR 1.522, 95%CI 1.968–4.454), type 2 diabetes (OR 2.464, 95%CI 1.232–4.931), and hyperlipidaemia (OR 1.411, 95%CI 1.221–8.988) are the risk factors for the cognitive deterioration, while the protective factors are high level of education (OR 0.032, 95%CI 0.007–0.149) and regular exercise (OR 0.307, 95%CI 0.115–0.818).

Discussion: Because some vascular disease risk factors, such as hypertension, can be treated effectively, cognitive decline related to these risk factors, and vascular disease per se, may be prevented or its course modified through more aggressive treatment and improved compliance.     

Event-related potential indicators of text integration across sentence boundaries

An event-related potentials (ERPs) study examined word-to-text integration processes across sentence boundaries. In a two-sentence passage, the accessibility of a referent for the first content word of the second sentence (the target word) was varied by the wording of the first sentence in one of the following ways: lexically (explicitly using a form of the target word); conceptually (using a paraphrase of the target word), and situationally (encouraging an inference concerning the referent of the target word). A baseline condition had no coreference between the two sentences. ERP results on the target word indicated multiple effects related to word identification and word-to-referent mapping processes. Both the explicit and paraphrase conditions, but not the inference condition, showed a reduced N400 relative to the baseline condition, consistent with immediate integration by lexico-semantic processes. A 300-ms effect (P300) was found in the paraphrase condition. The results were consistent with an immediate integration hypothesis and furthermore differentiated a lexical (N200), a conceptual (P300), and a situational (N400) component for this integration. The conceptual basis appears not to extend to predictive inferences.     

男性不育症的社会心理因素

男性不育症是一种多方面因素共同作用的综合征,在临床治疗中如果只考虑其中的一方面因素是不全面的．治标不治本。因此必须多加考虑其他影响因素,其中的社会心理因素尤为重要。针对不育症的社会心理因素加以阐述。     

三峡外迁移民社会心理应激的实证分析

通过对三峡外迁移民与当地居民心理应激状况进行现场调查,与当地居民相比较发现,三峡外迁移民具有更多消极情绪,更多采取消极应对方式,应激总分远远大于当地居民。三峡移民的社会支持低于当地居民。为了减轻对移民心身健康造成的应激,应从社会管理、技术服务、心理咨询等方面帮助移民,以适应环境,保持心身健康。     

心理辅导三大理论之人性观之剖析

人性观是对人的基本看法和哲学假设,在心理咨询和资料中,人性观是一切方法和技术的理论基础.在回答什么是人性和人性观的基础上,总结出人性观所应回答的基本问题,依据精神分析、行为主义和人本主义三大辅导流派对人性观基本问题所作的回答,剖析了三大流派的人性观.